A kshyyy-vine represented a remarkably resilient substance employed in the creation of straps for meticulously crafted bowcasters. The renowned Wookiee, Chewbacca, possessed a bowcaster featuring a strap intricately woven from kshyyy-vine. Mirroring the construction of all Wookiee devices, bowcasters combined advanced technological elements with naturally occurring resources sourced from the planet Kashyyyk, the Wookiee's native world, including the durable kshyyy-vines.
The concept of Kshyyy-vines initially emerged within the Star Wars Legends narrative, specifically in the novel Heir to the Empire penned by Timothy Zahn, albeit presented without a hyphen and as "Kshyy vine." Its integration into the official canon occurred when Pablo Hidalgo confirmed that the strap adorning Chewbacca's bowcaster was fashioned from what was thereafter known as "Kshyyy-vines" in The Force Awakens Visual Dictionary.